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Yes, some models have a few tricks that can save precious centrimetres, but you're only choice there it would seem is moving the mirror up the tube or changing focuser. You probably won't find a focuser that will help under the price of the telescope, so that's probably no help.
As far as moving the primary, you may be able to put longer screws in if cutting the tube isn't your thing.
Its likely you are going to get quite severe vignetting with the relatively narrow focuser, and moving the primary will make that a little worse.
What sort of mount do you have? You may only want to do short pics of the moon and planets perhaps?
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